Winter storage for 6B?

I have never had japanese maples out of the ground for the winter. This year I have several maples that will be in pots. I was hoping someone can advise me on the winter storage for japanese maples.

What I was planning on doing.
Place the trees under the table
put straw around the pots and ontop of the pots leaving the tree trunk exposed.
Put up some plastic on the sout and north sides to cut down on the wind keeping the sides and top open.

am I heading in the correct direction.

South Central PA.

Wish I had some great advice for you as I'm in the same zone as you but just a little to the east. Since you're talking deciduous, I think you could probably keep them outside out of the wind except for when you know the temps will be dropping to extreme lows... Then you can put them in an unheated garage or shed for a bit. I guess with conifers, they still need light (right?), so you can't really do this.

You might want to just swing by Nature's Way just north of Harrisburg and ask them what they do. I was there on Tuesday afternoon and spoke with Gary for a little while... Really nice guy and I'm sure he or the owner or anyone else there would gladly give you all the information you need to do it properly. Plus you get to check out all their stuff. Yew workshop Saturday... Was thinking of going since Chase Rosade cancelled his workshop this weekend.